i found in vbulletin.org have mod:
Adsense as second post. 2 Sizes - Big for guests, small for members - Legacy Version - vBulletin.org Forum
but i want exclude forums i use change:
<if condition="THIS_SCRIPT == 'showthread' AND !$GLOBALS['FIRSTPOSTID'] AND (!$show[member])" AND !in_array($forum[forumid], array(16,17,18,19)>
but have error:
how to fix ,i'm not coder 
(
Adsense as second post. 2 Sizes - Big for guests, small for members - Legacy Version - vBulletin.org Forum
but i want exclude forums i use change:
<if condition="THIS_SCRIPT == 'showthread' AND !$GLOBALS['FIRSTPOSTID'] AND (!$show[member])" AND !in_array($forum[forumid], array(16,17,18,19)>
but have error:
Code:
The following error occurred when attempting to evaluate this template:
The conditional on line 284 appears to be missing its beginning tag (<if>). This may cause unexpected behavior.
This is likely caused by a malformed conditional statement. It is highly recommended that you fix this error before continuing, but you may continue as-is if you wish.